Develop Reference

How to make a circular Button?

I'm a new to Android Development. While working on Android Studio 2.2, I tried to create a circular Button. As read from here, I tried to create a new Drawable Resource File. But I was unable to change Root Element to Shape. There was no such options. Could anyone help?

There are two solutions.
Floating Action Button: https://developer.android.com/reference/android/support/design/widget/FloatingActionButton.html
else:
You create a oval shape in xml.
and put that shape as background on button and make sure button have equal layout_height and layout_width.
Example:
oval_shape.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:dither="true"
android:shape="oval">
<solid android:color="#color/colorAccent"/>
</shape>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1">
<Button
android:layout_width="60dp"
android:layout_height="60dp"
android:background="#drawable/oval_shape"/>
</FrameLayout>

No option is needed here. Just use <shape>.
Check this example:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="#color/colorPrimary" />
<corners android:radius="#dimen/btn_radius" />
</shape>

Use xml drawable like this:
Save the following contents as round_button.xml in drawable folder
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="false">
<shape android:shape="oval">
<solid android:color="#fa09ad"/>
</shape>
</item>
<item android:state_pressed="true">
<shape android:shape="oval">
<solid android:color="#c20586"/>
</shape>
</item>
And set it as background of Button in xml like this:
<Button
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#drawable/round_button"
android:gravity="center_vertical|center_horizontal"
android:text="hello"
android:textColor="#fff" />

You are probably looking for the FloatingActionButton
It is available in the support-library.
The documation of the class.

Android view pager with tab layout

i have implemented viewpager for image slider with tablayouts as indicator but it seems that i can't make any padding between the dots ,this the layout for pager
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="220dp"
android:layout_below="#id/PlacesPageBanner">
<android.support.v4.view.ViewPager
android:id="#+id/placesPager"
android:layout_width="match_parent"
android:layout_height="180dp"
android:layout_margin="10dp" />
<android.support.design.widget.TabLayout
android:id="#+id/tabDots"
android:layout_width="match_parent"
android:layout_height="7dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
app:tabBackground="#drawable/tab_selector"
app:tabIndicatorHeight="0dp"
app:tabMaxWidth="7dp" />
</RelativeLayout>
code for layout containing the dots(tab_selector)
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/tab_indicator_selected"
android:state_selected="true"/>
<item android:drawable="#drawable/tab_indicator_default"/>

I think the issue is in your #drawable/tab_indicator_selected and #drawable/tab_indicator_default. Providing the xml code for those would be helpful to find your issue.
Here's how I did it:
Tab indicator selected
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape
android:innerRadius="0dp"
android:shape="ring"
android:thickness="8dp"
android:useLevel="false">
<solid android:color="#color/colorAccent"/>
</shape>
</item>
</layer-list>
Tab indicator default
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape
android:innerRadius="0dp"
android:shape="ring"
android:thickness="5dp"
android:useLevel="false">
<solid android:color="#android:color/darker_gray"/>
</shape>
</item>

Android Button With Background Color And Ripple Effect

I have an android button, where I want to give it a background color and both ripple effect
my ripple xml is as below.
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:color="#BDA0CB"
tools:targetApi="lollipop">
<item android:id="#android:id/mask">
<shape android:shape="rectangle">
<solid android:color="#BDA0CB" />
</shape>
</item>
</ripple>
and my button is
<Button android:id="#+id/Button_activity_login_ViewProfile" style="?android:textAppearanceSmall"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_marginTop="16dp" android:text="Save"
android:textStyle="bold"
android:layout_marginLeft="#dimen/margin_left"
android:layout_marginRight="#dimen/margin_right"
android:textColor="#ffffffff"
android:fontFamily="sans-serif"
android:background="#ff7e51c2" />
To give the ripple effect I have to remove background color...Is there a way I can keep both.

This can be achieve by adding the android:drawable in your ripple.xml.
First add this to your color.xml. Assuming that #ff7e51c2 is the background color you want for your button.
...
<color name="btn_bg_color">#ff7e51c2</color>
....
Then create a drawable for the button background(/drawable/btn_bg.xml):
<?xml version="1.0" encoding="utf-8"?><shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<corners android:radius="2dp" />
<solid
android:color="#color/btn_bg_color" />
</shape>
Then use the drawable in your ripple.xml:
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="?android:colorControlHighlight">
<item android:drawable="#drawable/btn_bg"/>
</ripple>

You can do something like this in the xml:
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/ripple"/>
Change your ripple.xml in the the drawable/ folder as follows:
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="?android:colorControlHighlight">
<item android:id="#android:id/mask">
<shape android:shape="oval">
<solid android:color="?android:colorAccent" />
</shape>
</item>

create ripple_effect.xml in your drawable folder
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:color="#1182bc"
tools:targetApi="lollipop">
<item android:id="#android:id/mask">
<shape android:shape="rectangle">
<solid android:color="#1182bc" />
</shape>
</item>
</ripple>
use this xml as your view's background like below
android:background="#drawable/ripple_effect"
hope this will help ..

Create two different versions of xml file so that it will work on Pre Lollipop devices.
drawable/button_effect.xml :-
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#3ab5d6"/>
<corners android:radius="3dp"/>
</shape>
drawable-v21/button_effect.xml:-
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:tools="http://schemas.android.com/tools"
android:color="#635a5a"
xmlns:android="http://schemas.android.com/apk/res/android"
tools:targetApi="lollipop">
<item android:drawable="#drawable/round_button" />
</ripple>
Create shaped drawable in drawable folder
drawable/round_button.xml :-
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#3ab5d6"/>
<corners android:radius="3dp"/>
</shape>
You can do something like this in the layout.xml:
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/button_effect"/>

Shadow in center on click image view

i am trying to show rounded shadow in center when status is pressed.
but it is giving full view (rectunglar) shadow in current case.
here is what i am trying...
1. left_button.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true">
<shape >
<solid android:color="#ffffff"></solid>
</shape>
</item>
<item android:state_focused="true"><shape>
<solid android:color="#40454a"></solid>
</shape></item>
<item><shape>
<solid android:color="#40454a"></solid>
</shape></item>
</selector>
here is the xml layout where i am applying ...
<RelativeLayout
android:id="#+id/relative_activity_camera_bottom"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:gravity="center_vertical"
android:background="#layout/footer_color" >
<LinearLayout
android:id="#+id/bottom_layout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:background="#android:color/transparent"
android:gravity="center_vertical"
android:weightSum="1.0" >
<ImageView
android:id="#+id/captureImage"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="0.5"
android:background="#layout/left_button"
android:src="#layout/camera_image"
/>
<ImageView
android:id="#+id/recordButton"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="0.5"
android:src="#layout/videocamera_image"
android:background="#layout/left_button"
android:onClick="startRecording"
/>
</LinearLayout>
</RelativeLayout>
original condition-
current case- (but i want to show white only in center)

For example, use a selector :
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/gradient_round_press_effect" android:state_selected="true" android:state_window_focused="false"/>
<item android:drawable="#drawable/gradient_round_press_effect" android:state_selected="true"/>
<item android:drawable="#drawable/gradient_round_press_effect" android:state_pressed="true" android:state_selected="false"/>
<item android:drawable="#drawable/gradient_round_press_effect_inverse" android:state_selected="false"/>
</selector>
With two drawable shapes, the first when clicked (gradient_round_press_effect):
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<gradient
android:endColor="#color/clr_the_color_behind"
android:gradientRadius="130"
android:startColor="#66000000"
android:type="radial" />
</shape>
Adapt the size of the radius with the size of the button
For start color use #66FFFFFF if you want white (66 is for the transparency)
For end color maybe you can use transparent ? i didn't try this
and when not clicked define your own colors (gradient_round_press_effect_inverse) not really "inverse" but this is an example of another gradient. You can just use a color instead
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<gradient
android:angle="270"
android:centerColor="#color/clr_gradient2"
android:endColor="#color/clr_gradient1"
android:startColor="#color/clr_gradient3"
android:type="linear" />
</shape>

Drawing top border on a semi-transparent shape on Android

I want to set the background of my layout to semi-transparent color with top border (not transparent) on it. I tried to achieve this. Currently my drawable file looks like the following:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="#FF0000FF" />
</shape>
</item>
<item android:top="5dp">
<shape>
<solid android:color="#7F000000" />
</shape>
</item>
</layer-list>
But in this xml the semi-transparent shape goes on the non-transparent shape, so in the result it isn't semi-transparent at all. Can you please help me to get the background I want?
Thanks in advance.

After searching the web and trying to find the right solution, finally I've got the answer from the guys in the chat. The solution is to create one more layout on top of the first one and for example give it a height of 10dp and the width of match_parent.
Here is the working example:
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/MainLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/main_bg"
android:orientation="vertical"
android:padding="5dp"
tools:context=".MainActivity" >
<LinearLayout
android:id="#+id/Box"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/background"
android:orientation="vertical" >
<LinearLayout
android:id="#+id/Border"
android:layout_width="match_parent"
android:layout_height="10dp"
android:layout_weight="0.64"
android:background="#drawable/border"
android:orientation="vertical"
tools:ignore="InefficientWeight" >
</LinearLayout>
<TextView
android:id="#+id/Content"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.64"
android:padding="5dp"
android:text="#string/example"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#color/white" />
</LinearLayout>
</LinearLayout>
main_bg.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:top="5dp">
<shape>
<solid android:color="#FF990000" />
</shape>
</item>
</layer-list>
background.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:top="5dp">
<shape>
<solid android:color="#55000000" />
</shape>
</item>
</layer-list>
border.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:top="5dp">
<shape>
<solid android:color="#FFFF0000" />
</shape>
</item>
</layer-list>
strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Transparent Views</string>
<string name="action_settings">Settings</string>
<string name="hello_world">Hello world!</string>
<string name="example">Content …</string>
<color name="white">#FFFFFFFF</color>
</resources>
Hope it will be helpful for someone else too.

Here is one simple solution.
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:left="-5dp" android:bottom="-5dp" android:right="-5dp">
<shape android:shape="rectangle">
<stroke android:width="5dp" android:color="#color/borderColor" />
<solid android:color="#color/backgroundColor" />
</shape>
</item>
</layer-list>